Research offers advice for fighting pest
New research shows that treating ash trees with insecticides in the fall along with the normal treatments in the spring can be both beneficial and safe in protecting against the emerald ash borer. "The data suggests that you can also inject trees in the fall, especially if you are in an area of infestation," said Robin Millsap, spokeswoman for MSU Extension, specializing in the emerald ash borer. The emerald ash borer is an exotic insect native to Asia that only attacks ash trees, Dominic Perrone, spokesman for the Michigan Department of Agriculture said.